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<article>
    <h2>XQuery mode</h2>
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        <textarea id="code" name="code"> xquery version &quot;1.0-ml&quot;; (: this is : a "comment" :) let $let := &lt;x attr=&quot;value&quot;&gt;&quot;test&quot;&lt;func&gt;function() $var {function()} {$var}&lt;/func&gt;&lt;/x&gt; let $joe:=1 return element element { attribute attribute
            { 1 }, element test { &#39;a&#39; }, attribute foo { &quot;bar&quot; }, fn:doc()[ foo/@bar eq $let ], //x } (: a more 'evil' test :) (: Modified Blakeley example (: with nested comment :) ... :) declare private function local:declare() {()};
            declare private function local:private() {()}; declare private function local:function() {()}; declare private function local:local() {()}; let $let := &lt;let&gt;let $let := &quot;let&quot;&lt;/let&gt; return element element { attribute attribute
            { try { xdmp:version() } catch($e) { xdmp:log($e) } }, attribute fn:doc { &quot;bar&quot; castable as xs:string }, element text { text { &quot;text&quot; } }, fn:doc()[ child::eq/(@bar | attribute::attribute) eq $let ], //fn:doc } xquery version
            &quot;1.0-ml&quot;; (: Copyright 2006-2010 Mark Logic Corporation. :) (: : Licensed under the Apache License, Version 2.0 (the &quot;License&quot;); : you may not use this file except in compliance with the License. : You may obtain a copy
            of the License at : : http://www.apache.org/licenses/LICENSE-2.0 : : Unless required by applicable law or agreed to in writing, software : distributed under the License is distributed on an &quot;AS IS&quot; BASIS, : WITHOUT WARRANTIES OR
            CONDITIONS OF ANY KIND, either express or implied. : See the License for the specific language governing permissions and : limitations under the License. :) module namespace json = &quot;http://marklogic.com/json&quot;; declare default function
            namespace &quot;http://www.w3.org/2005/xpath-functions&quot;; (: Need to backslash escape any double quotes, backslashes, and newlines :) declare function json:escape($s as xs:string) as xs:string { let $s := replace($s, &quot;\\&quot;, &quot;\\\\&quot;)
            let $s := replace($s, &quot;&quot;&quot;&quot;, &quot;\\&quot;&quot;&quot;) let $s := replace($s, codepoints-to-string((13, 10)), &quot;\\n&quot;) let $s := replace($s, codepoints-to-string(13), &quot;\\n&quot;) let $s := replace($s, codepoints-to-string(10),
            &quot;\\n&quot;) return $s }; declare function json:atomize($x as element()) as xs:string { if (count($x/node()) = 0) then 'null' else if ($x/@type = &quot;number&quot;) then let $castable := $x castable as xs:float or $x castable as xs:double
            or $x castable as xs:decimal return if ($castable) then xs:string($x) else error(concat(&quot;Not a number: &quot;, xdmp:describe($x))) else if ($x/@type = &quot;boolean&quot;) then let $castable := $x castable as xs:boolean return if ($castable)
            then xs:string(xs:boolean($x)) else error(concat(&quot;Not a boolean: &quot;, xdmp:describe($x))) else concat('&quot;', json:escape($x), '&quot;') }; (: Print the thing that comes after the colon :) declare function json:print-value($x as
            element()) as xs:string { if (count($x/*) = 0) then json:atomize($x) else if ($x/@quote = &quot;true&quot;) then concat('&quot;', json:escape(xdmp:quote($x/node())), '&quot;') else string-join(('{', string-join(for $i in $x/* return json:print-name-value($i),
            &quot;,&quot;), '}'), &quot;&quot;) }; (: Print the name and value both :) declare function json:print-name-value($x as element()) as xs:string? { let $name := name($x) let $first-in-array := count($x/preceding-sibling::*[name(.) = $name])
            = 0 and (count($x/following-sibling::*[name(.) = $name]) &gt; 0 or $x/@array = &quot;true&quot;) let $later-in-array := count($x/preceding-sibling::*[name(.) = $name]) &gt; 0 return if ($later-in-array) then () (: I was handled previously
            :) else if ($first-in-array) then string-join(('&quot;', json:escape($name), '&quot;:[', string-join((for $i in ($x, $x/following-sibling::*[name(.) = $name]) return json:print-value($i)), &quot;,&quot;), ']'), &quot;&quot;) else string-join(('&quot;',
            json:escape($name), '&quot;:', json:print-value($x)), &quot;&quot;) }; (:~ Transforms an XML element into a JSON string representation. See http://json.org. &lt;p/&gt; Sample usage: &lt;pre&gt; xquery version &quot;1.0-ml&quot;; import module
            namespace json=&quot;http://marklogic.com/json&quot; at &quot;json.xqy&quot;; json:serialize(&amp;lt;foo&amp;gt;&amp;lt;bar&amp;gt;kid&amp;lt;/bar&amp;gt;&amp;lt;/foo&amp;gt;) &lt;/pre&gt; Sample transformations: &lt;pre&gt; &amp;lt;e/&amp;gt;
            becomes {&quot;e&quot;:null} &amp;lt;e&amp;gt;text&amp;lt;/e&amp;gt; becomes {&quot;e&quot;:&quot;text&quot;} &amp;lt;e&amp;gt;quote &quot; escaping&amp;lt;/e&amp;gt; becomes {&quot;e&quot;:&quot;quote \&quot; escaping&quot;} &amp;lt;e&amp;gt;backslash
            \ escaping&amp;lt;/e&amp;gt; becomes {&quot;e&quot;:&quot;backslash \\ escaping&quot;} &amp;lt;e&amp;gt;&amp;lt;a&amp;gt;text1&amp;lt;/a&amp;gt;&amp;lt;b&amp;gt;text2&amp;lt;/b&amp;gt;&amp;lt;/e&amp;gt; becomes {&quot;e&quot;:{&quot;a&quot;:&quot;text1&quot;,&quot;b&quot;:&quot;text2&quot;}}
            &amp;lt;e&amp;gt;&amp;lt;a&amp;gt;text1&amp;lt;/a&amp;gt;&amp;lt;a&amp;gt;text2&amp;lt;/a&amp;gt;&amp;lt;/e&amp;gt; becomes {&quot;e&quot;:{&quot;a&quot;:[&quot;text1&quot;,&quot;text2&quot;]}} &amp;lt;e&amp;gt;&amp;lt;a array=&quot;true&quot;&amp;gt;text1&amp;lt;/a&amp;gt;&amp;lt;/e&amp;gt;
            becomes {&quot;e&quot;:{&quot;a&quot;:[&quot;text1&quot;]}} &amp;lt;e&amp;gt;&amp;lt;a type=&quot;boolean&quot;&amp;gt;false&amp;lt;/a&amp;gt;&amp;lt;/e&amp;gt; becomes {&quot;e&quot;:{&quot;a&quot;:false}} &amp;lt;e&amp;gt;&amp;lt;a type=&quot;number&quot;&amp;gt;123.5&amp;lt;/a&amp;gt;&amp;lt;/e&amp;gt;
            becomes {&quot;e&quot;:{&quot;a&quot;:123.5}} &amp;lt;e quote=&quot;true&quot;&amp;gt;&amp;lt;div attrib=&quot;value&quot;/&amp;gt;&amp;lt;/e&amp;gt; becomes {&quot;e&quot;:&quot;&amp;lt;div attrib=\&quot;value\&quot;/&amp;gt;&quot;} &lt;/pre&gt;
            &lt;p/&gt; Namespace URIs are ignored. Namespace prefixes are included in the JSON name. &lt;p/&gt; Attributes are ignored, except for the special attribute @array=&quot;true&quot; that indicates the JSON serialization should write the node,
            even if single, as an array, and the attribute @type that can be set to &quot;boolean&quot; or &quot;number&quot; to dictate the value should be written as that type (unquoted). There's also an @quote attribute that when set to true writes
            the inner content as text rather than as structured JSON, useful for sending some XHTML over the wire. &lt;p/&gt; Text nodes within mixed content are ignored. @param $x Element node to convert @return String holding JSON serialized representation
            of $x @author Jason Hunter @version 1.0.1 Ported to xquery 1.0-ml; double escaped backslashes in json:escape :) declare function json:serialize($x as element()) as xs:string { string-join(('{', json:print-name-value($x), '}'), &quot;&quot;)
            }; </textarea>
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    <p>
        <strong>MIME types defined:</strong> <code>application/xquery</code>.</p>
    <p>Development of the CodeMirror XQuery mode was sponsored by
        <a href="http://marklogic.com">MarkLogic</a> and developed by
        <a href="https://twitter.com/mbrevoort">Mike Brevoort</a>. </p>
</article>